Word of the Day

Wednesday, April 03, 2013

aperture

\AP-er-cher\ , noun;
1.
an opening, as a hole, slit, crack, gap, etc.
2.
Also called aperture stop. Optics. an opening, usually circular, that limits the quantity of light that can enter an optical instrument.
Quotes:
He remained motionless and pensive, his eyes fixed on the gloomy aperture that was open at his feet.
-- Alexandre Dumas, The Count of Monte Cristo, 1844
He made for it a large aperture with a cover pierced with numerous holes, and, taking forth some new nails, said to the young lion, Enter... The young lion therefore rejoiced at this, and advanced to the aperture; but he saw that it was narrow.
-- Edward William Lane and Edward Stanley Poole, The Thousand and One Nights, 1865
Origin:
Aperture entered English in the mid-1600s from the Latin aperīre meaning "to open."
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